Chen Jin’s 21-12, 21-18 victory over Du Pengyu means he is likely to overtake Peter Gade as the fourth ranked player in the world ranking, a result which will give him a ticket to the London Olympics along with Lin Dan and Chen Long.
Each country can have a maximum of three representatives in the Olympics, but only if they are ranked among the top four in the world during the Olympic qualifying period.
Lin Dan and Chen Long are currently ranked No. 2 and No. 3 in the world, behind Malaysia’s Lee Chong Wei.
“These two months have been continuous matches. I'm tired both physically and mentally,” Chen Jin told Xinhua.
“But there is no other way. For the purpose of Olympic points, I have to go all out.
“It doesn't matter who is champion. After all, the top four places in the Asian Championship are ours," he added, referring to the men's singles event.
Chen had a walkover in the semi-finals on Saturday after fellow Chinese badminton superstar and four-time world champion Lin Dan withdrew due to injury.
Zhao Yunlei (left), meanwhile, grabbed the women’s doubles and mixed doubles crown in Qingdao as China won four of the five finals.
First, Zhao Yunlei partnered Tian Qing to a 21-14, 21-15 victory over youngsters Bao Yixin-Zhong Qianxin.
She then teamed up with Zhang Nan to edge archrivals Xu Chen-Ma Jin 21-13, 21-12.
There was a big upset in the world’s singles where world champion Wang Yihan failed to retain her title despite reaching the final without dropping a game.
Facing world No. 4 and the form player so far, Li Xuerui (right), Wang Yihan battled hard, but fell 21-16, 16-21, 21-9.
The only final not to have a local player was the men’s doubles which was contested by Kim Ki Jung-Kim Sa Rang of South Korea and Japan’s Hiroyuki Endo-Kenichi Hayakawa.
The two pairs had earlier beaten Chinese opponents and provided a good contest for the crowd before the South Koreans walked away with a 21-12, 21-16 victory.
For full results, click here.
Singles: Chen Jin (China) bt Du Pengyu (China) 21-12, 21-18.
Doubles: Kim Ki Jung-Kim Sa Rang (South Korea) bt Hiroyuki Endo-Kenichi Hayakawa (Japan) 21-12, 21-16.
Singles: Li Xuerui (China) bt Wang Yihan (China) 21-16, 16-21, 21-9.
Doubles: Tian Qing-Zhao Yunlei (China) bt Bao Yixin-Zhong Qianxin (China) 21-14, 21-15.
Mixed doubles: Zhang Nan-Zhao Yunlei (China) bt Xu Chen-Ma Jin (China) 21-13, 21-12.